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| 型号： | I5104XY |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 音频合成 |
| 英文描述： | 262.2 SEC, SPEECH SYNTHESIZER WITH RCDG, UUC25 |
| 封装： | DIE-25 |
| 文件页数： | 52/87页 |
| 文件大小： | 616K |
| 代理商： | I5104XY |
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57
8393B-MCU Wireless-02/13
ATmega256/128/64RFR2
Reception of Reserved Frames
Frames with reserved frame types (see section Table 9-19 on page 69) can also be
handled in RX_AACK mode. This might be required when implementing proprietary,
non-standard compliant protocols. It is an extension of the address filtering in
RX_AACK mode. Received frames are either handled similar to data frames or may be
allowed to completely bypass the address filter.
Table 9-11 below shows the required configuration for a node to receive reserved
frames and Figure 9-20 on page 52 shows the corresponding flow chart.
Table 9-11. RX_AACK Configuration to Receive Reserved Frame Types
Register Name
Register Bits
Description
SHORT_ADDR_0/1
PAN_ADDR_0/1
IEEE_ADDR_0
…
IEEE_ADDR_7
Set node addresses
RX_SAFE_MODE
7
0
: disable frame protection
1
: enable frame protection
AACK_UPLD_RES_FT
4
1
: Enable reserved frame type reception
AACK_FLTR_RES_FT
5
Filter reserved frame types like data frame type,
see note below
0
: disable
1
: enable
SLOTTED_OPERATION
0
: if transceiver works in un-slotted mode
1
: if transceiver works in slotted mode
AACK_I_AM_COORD
3
0
: device is not PAN coordinator
1
: device is PAN coordinator
AACK_DIS_ACK
4
0
: Enable generation of acknowledgment
1
: Disable generation of acknowledgment
AACK_FVN_MODE
7:6
Controls the ACK behavior, depends on FCF
frame version number
0x00
: acknowledges only frames with version
number 0, i.e. according to IEEE 802.15.4-2003
frames
0x01
: acknowledges only frames with version
number 0 or 1, i.e. frames according to
IEEE 802.15.4-2006
0x10
: acknowledges only frames with version
number 0 or 1 or 2
0x11
: acknowledges all frames, independent of
the FCF frame version number
There are two different options for handling reserved frame types.
1. AACK_UPLD_RES_FT = 1, AACK_FLT_RES_FT = 0:
Any non-corrupted frame with a reserved frame type is indicated by a
TRX24_RX_END interrupt. No further address filtering is applied on those frames.
A TRX24_AMI interrupt is never generated and the acknowledgment subfield is
ignored.
2. AACK_UPLD_RES_FT = 1, AACK_FLT_RES_FT = 1:
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